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Email Verifier

Runs in your browser • The domain is looked up through public DNS

Check the format of an email address and whether its domain can receive mail.

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What Leaves Your BrowserOnly the domain after the @ sign is sent, to a public DNS service. DocBrio does not store the address.
No Upload WaitNothing has to be uploaded or downloaded again, so speed depends on your device and the size of the file.
Free, No SignupNo account and no watermark. Works in current browsers on phones, tablets and computers.

About Email Verifier

This tool runs three checks on an email address. It checks that the address is written in a valid format. It compares the domain with a built in list of known disposable mail services. And it looks up the mail server (MX) records of the domain to see whether that domain is set up to receive email at all. From the result it also guesses the mail provider, such as Gmail, Google Workspace or Microsoft 365, and suggests a likely first and last name from the part before the @ sign. Please read the result for what it is: a domain that accepts mail does not prove that one particular mailbox exists. No tool can confirm that without actually sending a message, and this tool never sends one. How your data is handled: the format check, the disposable list and the name guess run in your browser. For the mail server lookup, your browser sends the domain part of the address (for example example.com, never the part before the @) to the public DNS service of Google, and to the one of Cloudflare if Google does not answer. DocBrio itself does not receive or store the address.

How to Use Email Verifier Step by Step

  1. Type or paste one email address.
  2. Press Verify Email Address or the Enter key.
  3. Read the result: format, disposable check, mail servers of the domain, likely provider and the suggested name.

Frequently Asked Questions

Does this prove that the mailbox exists?

No. It shows that the address is correctly written and that its domain has mail servers. Whether that exact mailbox exists can only be known by sending a message, which this tool does not do.

Does any of my input leave my browser?

Yes, one part. The domain after the @ sign is sent to the public DNS service of Google (dns.google), or of Cloudflare as a fallback, to look up its mail servers. The part before the @ sign is not sent anywhere, and DocBrio does not store the address.

Does the owner of the address get a message?

No. Nothing is sent to the address or to its mail server.

How reliable is the suggested name?

It is a guess based on common patterns such as first.last. Treat it as a hint and not as a fact.

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